Last week, as the Republican National Committee drafted the rules governing this week’s nominating convention, a small group of anti-Trump delegates attempted to include a rule that would allow delegates bound to cast their ballots for Trump to “vote their conscience,” and potentially vote in a different candidate.

“The party is united and it’s only a few people who are holding out,” Manafort told journalists, adding that the anti-Trump faction within the party is “much ado about very little.”

Manafort said the Trump campaign was “pleased” the the so-called conscience clause “was crushed.” He added that the anti-Trump rule was an attempt to “discredit the primary season and the votes of millions” of Americans.

The Republican National Convention is taking place from Monday through Thursday in Cleveland, Ohio. Donald Trump is expected to receive the party’s nomination and go on to compete in the November general election.